Two new electronic signs will inform drivers travelling to and from Martinborough of road closures in the area due to heavy rainfall - and of the alternative routes.
The road information signs were erected on Thursday and are situated on State Highway 53. One is on the outskirts of Featherston and the other is just out of Martinborough.
Another road information sign for Greytown is expected to be up before Christmas, said infrastructure and services manager Mark Allingham, from South Wairarapa District Council.
"South Wairarapa has intermittent problems with road closures, especially with the roads into Martinborough," he said.
"Depending on what roads are flooded at what time, it can be confusing for residents as well as non residents.